Media & Text: add "gap" options

[sgomes]

What problem does this address?

The existing Media & Text controls for padding and margin apply to the entire block:

This makes it difficult to use the media block for use-cases where more control is needed within the block, such as:

• controlling the space between the media and the text
  
• having the image span the full height of the block, while ensuring the text has a custom amount of padding.
  

What is your proposed solution?

The introduction of a gap option for the text could help. This would be implemented as a configurable 4-way padding or margin around the text, allowing the user to control:

• how much space there is between the media and the text
• how much space there is between the text and the other horizontal edge
• how much space there is between the text and the top/bottom of the block

An alternative would be having a separate padding controls for the media and the text:

[Mayank-Tripathi32]

Hi @sgomes,

Thank you for raising this issue.
I believe many of the suggested actions can be achieved by simply wrapping the paragraph in a Group block.

[sgomes]

Thank you, @Mayank-Tripathi32!

Yes, that's correct, and it's a great workaround if you need this now 👍 Other workarounds involve composing a few layout blocks to achieve a similar effect, without using Media & Text at all.

However, it could become cumbersome and somewhat error-prone to use this approach across many instances of Media & Text. So I see this as more of a convenience feature to enable a few extra options on Media & Block directly, and to have them easily applied to all your Media & Text blocks via something like global styles.

[t-hamano]

At the very least, it seems reasonable to be able to control the gap between media and content. This is also discussed in #49406.

[Mayank-Tripathi32]

Hi, I’m working on a PR to add gap control for media and content component. I believe the rest can be achieved using the group block.

[Mamaduka]

I think this is similar to #28556.